Steward

Library for easy bi-direction converting between plain JSON-like data (numbers, strings, lists and dicts) and compound user-defined classes.

Trivial example:

>>> from steward import *
>>> class Comp(Component):
...     a = Field()
...     b = Field(default=1)
...
>>> v = Comp(a=0)
>>> dct = v.as_plain()
>>> dct
{'a': 0, 'b': 1}
>>> v2 = Comp.from_plain(dct)
>>> v2.a
0
>>> v2.b
1
>>> v2.a = 7
>>> v2.as_plain()
{'a': 7, 'b': 1}